Clear Outside v1.0 - International Weather Forecasts For Astronomers

Tuesday 21

Waxing Crescent 35%

08:45

02:18

19 Good
20 Good
21 Good
22 Good
23 Good
00 OK
01 OK
02 Good
03 Good
04 Good
05 OK
06 OK
07 OK
08 OK
09 OK
10 OK
11 Good
12 Good
13 Good
14 Good
15 Good
16 Good
17 Good
18 OK

Sun - Rise: 05:44, Set: 20:10, Transit: 12:58. Moon - Rise: 08:45, Set: 02:18. Civil Dark: 20:48 - 05:06. Nautical Dark: 21:37 - 04:17. Astro Dark: 22:34 - 03:18

Total Clouds (% Sky Obscured)

0
0
0
0
6
24
32
7
0
12
23
25
29
28
24
17
3
0
0
0
0
0
2
31

Low Clouds (% Sky Obscured)

0
0
0
0
6
24
32
7
0
12
23
25
29
28
24
17
3
0
0
0
0
0
0
31

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
3

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

18
14
12
11
11
11
11
11
11
11
11
11
12
13
15
15
15
16
17
18
18
17
17
15

Chance of Frost

Temperature (°C)

10
9
8
7
7
7
7
7
7
7
7
7
8
9
10
11
11
11
12
11
11
11
10
10

Feels Like (°C)

7
5
5
4
4
4
4
4
4
4
4
4
5
6
6
7
8
7
8
7
7
7
6
6

Dew Point (°C)

6
6
5
4
4
3
3
3
3
4
3
4
5
5
5
5
5
5
5
5
4
5
4
5

Relative Humidity (%)

74
80
84
81
81
78
79
78
79
81
79
82
81
77
71
67
65
65
65
63
62
64
65
69

Pressure (mb)

1028
1028
1028
1028
1029
1029
1029
1028
1028
1028
1028
1028
1029
1029
1029
1030
1030
1030
1030
1030
1030
1030
1030
1030

Ozone (du)

407
408
405
403
400
397
395
394
395
397
399
398
397
393
389
388
387
391
395
394
388
384
383
382

Wednesday 22

Waxing Crescent 46%

10:10

03:00

19 OK
20 OK
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 OK
15 OK
16 Good
17 Good
18 OK

Sun - Rise: 05:42, Set: 20:12, Transit: 12:58. Moon - Rise: 10:10, Set: 03:00. Civil Dark: 20:50 - 05:03. Nautical Dark: 21:39 - 04:14. Astro Dark: 22:38 - 03:15

Total Clouds (% Sky Obscured)

38
43
55
54
63
62
62
66
61
47
49
51
60
59
53
53
54
52
48
34
26
1
4
27

Low Clouds (% Sky Obscured)

38
43
55
54
63
62
62
66
61
47
49
51
60
59
53
53
54
52
47
34
25
0
0
19

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

High Clouds (% Sky Obscured)

3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
3
3
1
4
27

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

13
12
11
11
10
9
8
9
9
9
8
8
8
10
10
11
11
11
12
12
12
12
12
11

Chance of Frost

Temperature (°C)

9
8
7
6
6
6
6
5
5
5
5
5
6
8
9
10
11
12
12
12
12
12
11
10

Feels Like (°C)

6
6
4
5
4
4
4
4
3
3
3
4
5
6
7
8
9
9
10
10
10
9
9
7

Dew Point (°C)

5
5
5
5
5
5
5
5
4
4
4
4
5
5
5
4
3
3
3
3
3
3
3
3

Relative Humidity (%)

77
85
91
93
91
93
94
94
94
93
94
94
94
85
76
66
58
55
53
52
52
54
55
60

Pressure (mb)

1030
1031
1031
1031
1031
1032
1032
1032
1032
1032
1032
1032
1032
1033
1033
1033
1033
1033
1033
1032
1032
1032
1031
1031

Ozone (du)

378
375
376
377
378
379
380
384
383
381
378
376
374
372
369
368
366
364
364
363
363
364
366
367

Thursday 23

Waxing Crescent 46%

11:39

03:27

19 OK
20 OK
21 OK
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 05:40, Set: 20:14, Transit: 12:58. Moon - Rise: 11:39, Set: 03:27. Civil Dark: 20:52 - 05:01. Nautical Dark: 21:41 - 04:11. Astro Dark: 22:41 - 03:11

Total Clouds (% Sky Obscured)

47
42
33
50
52
47
51
54
54
52
58
63
61
75
70
65
75
70
70
81
86
91
86
81

Low Clouds (% Sky Obscured)

38
31
17
37
51
47
51
54
54
52
58
63
59
62
51
41
22
12
8
5
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
3
3
3
0

High Clouds (% Sky Obscured)

32
40
33
37
14
3
3
3
0
0
3
0
3
30
35
35
40
35
40
57
62
62
71
76

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
2
16
56
70
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

10
8
7
6
6
6
6
6
6
5
5
6
5
7
7
7
7
7
8
8
8
8
8
7

Chance of Frost

Temperature (°C)

9
7
5
5
4
4
4
4
4
4
3
3
4
7
9
10
12
13
14
14
14
14
13
12

Feels Like (°C)

7
4
3
2
2
2
2
3
2
2
2
1
3
5
7
8
10
11
12
11
12
12
11
10

Dew Point (°C)

4
4
4
3
3
3
2
2
2
2
2
2
2
3
2
2
2
2
2
2
3
3
3
4

Relative Humidity (%)

72
82
88
89
89
89
88
88
89
89
89
91
85
75
64
56
49
45
45
44
45
48
50
58

Pressure (mb)

1031
1031
1031
1031
1031
1030
1030
1030
1029
1029
1029
1029
1028
1029
1029
1029
1028
1028
1027
1027
1026
1026
1025
1025

Ozone (du)

367
367
366
364
362
361
361
361
363
365
365
367
369
371
374
376
378
381
385
387
385
378
374
369

Friday 24

First Quarter 58%

13:05

03:45

19 Bad
20 OK
21 OK
22 Good
23 Good
00 Good
01 Good
02 Good
03 Good
04 Good
05 OK
06 OK
07 OK
08 Good
09 Good
10 Good
11 Good
12 Good
13 OK
14 OK
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 05:37, Set: 20:16, Transit: 12:57. Moon - Rise: 13:05, Set: 03:45. Civil Dark: 20:54 - 04:59. Nautical Dark: 21:44 - 04:09. Astro Dark: 22:44 - 03:07

Total Clouds (% Sky Obscured)

56
41
26
4
4
2
2
0
0
11
20
33
24
14
5
8
11
15
28
45
62
66
67
67

Low Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
11
20
33
24
14
0
0
0
0
0
0
0
0
0
0

Medium Clouds (% Sky Obscured)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
13
26
36

High Clouds (% Sky Obscured)

55
40
13
3
1
0
1
0
0
0
0
2
2
2
3
6
10
14
28
45
62
66
67
67

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

6
5
5
4
3
2
3
3
3
3
3
3
4
4
4
4
3
4
5
7
9
11
11
11

Chance of Frost

Temperature (°C)

10
8
6
5
4
4
4
4
3
3
3
3
4
7
10
13
14
16
17
16
16
15
14
12

Feels Like (°C)

9
7
4
3
4
4
3
3
2
2
1
1
2
5
9
12
13
14
16
14
13
12
10
10

Dew Point (°C)

5
4
3
2
2
1
1
-0
-1
-2
-3
-3
-2
0
3
4
4
5
6
7
6
6
6
7

Relative Humidity (%)

69
78
83
83
82
80
79
76
73
69
68
67
66
64
61
57
50
49
50
52
53
53
60
70

Pressure (mb)

1025
1025
1025
1025
1025
1024
1024
1024
1023
1023
1023
1023
1022
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023
1023

Ozone (du)

366
364
363
365
366
367
368
369
370
368
367
366
363
361
360
359
358
357
357
358
359
360
359
359

Saturday 25

Waxing Gibbous 68%

14:27

03:59

19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 05:35, Set: 20:17, Transit: 12:57. Moon - Rise: 14:27, Set: 03:59. Civil Dark: 20:56 - 04:56. Nautical Dark: 21:46 - 04:06. Astro Dark: 22:48 - 03:03

Total Clouds (% Sky Obscured)

67
78
76
76
74
83
99
99
98
96
94
91
98
96
94
83
74
64
68
73
77
84
90
90

Low Clouds (% Sky Obscured)

14
28
40
49
60
69
74
75
76
79
78
77
30
25
19
18
17
16
27
39
43
32
21
10

Medium Clouds (% Sky Obscured)

22
11
2
13
24
35
38
46
43
39
32
22
25
23
24
25
21
18
17
17
21
27
31
24

High Clouds (% Sky Obscured)

61
57
55
62
60
77
82
59
34
35
28
20
93
85
78
72
66
60
60
55
40
54
72
90

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
10
9
8
8
7
7
7
6
6
6
5
5
6
7
8
9
9
10
9
9
9
8
7

Chance of Frost

Temperature (°C)

11
9
7
7
7
6
6
6
6
6
6
6
6
7
9
10
11
12
13
13
14
14
14
13

Feels Like (°C)

8
7
5
5
5
5
4
3
3
3
2
2
3
3
4
5
5
7
7
10
11
11
11
11

Dew Point (°C)

8
7
6
5
5
5
4
5
4
4
4
4
3
3
4
3
4
5
6
6
7
7
8
7

Relative Humidity (%)

81
85
88
88
88
88
88
90
88
88
86
86
82
75
70
63
63
62
61
61
62
63
67
69

Pressure (mb)

1024
1024
1025
1025
1026
1026
1026
1026
1026
1026
1027
1027
1027
1028
1028
1028
1028
1028
1028
1028
1027
1027
1027
1027

Ozone (du)

359
359
360
362
363
361
361
364
368
371
374
375
375
374
374
373
374
375
375
376
376
376
377
378

Sunday 26

Waxing Gibbous 78%

15:46

04:09

19 Bad
20 Bad
21 Bad
22 Bad
23 OK
00 OK
01 OK
02 OK
03 OK
04 OK
05 OK
06 OK
07 OK
08 Good
09 Good
10 OK
11 OK
12 OK
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad

Sun - Rise: 05:33, Set: 20:19, Transit: 12:57. Moon - Rise: 15:46, Set: 04:09. Civil Dark: 20:58 - 04:54. Nautical Dark: 21:49 - 04:03. Astro Dark: 22:52 - 02:59

Total Clouds (% Sky Obscured)

86
83
79
60
36
17
21
12
7
10
15
17
13
8
8
17
26
36
42
53
60
73
75
78

Low Clouds (% Sky Obscured)

7
3
0
8
16
17
21
12
7
10
11
12
13
8
8
17
26
36
42
53
54
64
74
78

Medium Clouds (% Sky Obscured)

26
35
43
33
22
17
19
10
2
8
12
17
13
8
8
17
23
33
42
50
55
34
22
15

High Clouds (% Sky Obscured)

70
47
27
20
12
1
1
0
0
0
0
0
0
0
0
0
0
0
2
3
5
6
9
9

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

2
2
1
9
10
7
22
26
23
20
13
3
10
5
2
6
7
6
11
11
6
9
9
1

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

7
6
6
6
5
5
5
5
4
4
4
4
5
7
8
10
11
12
12
12
13
13
13
12

Chance of Frost

Temperature (°C)

12
11
11
10
9
9
8
8
7
6
7
7
7
8
10
11
12
12
13
12
12
12
11
10

Feels Like (°C)

11
8
8
8
8
7
7
6
6
6
6
5
5
6
7
7
8
8
9
11
10
10
10
10

Dew Point (°C)

8
7
7
6
6
6
6
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5

Relative Humidity (%)

72
75
77
80
81
82
84
85
88
90
88
85
85
78
72
65
63
62
60
61
61
62
65
69

Pressure (mb)

1027
1028
1028
1028
1028
1028
1028
1028
1028
1029
1029
1029
1029
1029
1029
1030
1030
1030
1030
1030
1030
1029
1029
1030

Ozone (du)

378
377
376
374
375
375
375
376
377
379
381
383
385
386
388
390
389
388
388
388
389
389
388
387

Monday 27

Waxing Gibbous 86%

17:02

04:19

19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad

Sun - Rise: 05:31, Set: 20:21, Transit: 12:57. Moon - Rise: 17:02, Set: 04:19. Civil Dark: 21:00 - 04:52. Nautical Dark: 21:51 - 04:00. Astro Dark: 22:55 - 02:55

Total Clouds (% Sky Obscured)

73
69
64
66
71
76
78
80
82
76
71
71
72
78
82
82
82
82

Low Clouds (% Sky Obscured)

73
69
64
66
70
70
72
74
76
72
58
48
27
21
16
21
29
36

Medium Clouds (% Sky Obscured)

10
7
1
0
0
0
0
0
1
3
6
8
15
16
21
27
33
40

High Clouds (% Sky Obscured)

7
6
2
14
26
37
40
44
46
31
15
0
3
4
6
5
3
2

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

3
5
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

12
10
9
8
8
8
7
7
7
6
6
6
6
7
8
10
10
11

Chance of Frost

Temperature (°C)

10
9
8
7
7
6
6
6
5
5
5
6
6
7
9
10
10
11

Feels Like (°C)

10
6
6
7
6
6
5
3
2
2
2
2
2
5
5
6
6
7

Dew Point (°C)

5
5
5
5
5
5
5
5
4
4
4
4
4
4
5
5
5
5

Relative Humidity (%)

74
80
85
91
91
93
93
93
91
91
91
90
86
81
75
71
68
66

Pressure (mb)

1030
1030
1030
1030
1030
1030
1030
1030
1029
1029
1029
1029
1029
1029
1029
1028
1028
1028

Ozone (du)

386
385
385
384
383
382
381
380
379
378
378
379
379
381
382
384
385
386

Forecast for Boston, Lincolnshire, United Kingdom (52.98,-0.02)

Generated: 21/04/26 19:44:53. Forecast: 21/04/26 to 27/04/26. Timezone: UTC+1.00